standard tier · 72 briefs · 1,368 runs · results db2e24e

CityFormGen

Generative and optimisation methods for middle housing, compared under matched compute

RESEARCH GENERATIVE-DESIGN BENCHMARK - NOT CONSTRUCTION DOCUMENTATION OR CODE CERTIFICATION.

B0019 · privacy-optimal · seed 1

B0019-sketch-1-1187

Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0019

Plan drawing of a courtyard on a 21.7 by 27.8 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 77 square metres. Dwelling U1 (1BR) has 5 rooms totalling 114 square metres. Dwelling U2 (2BR) has 6 rooms totalling 114 square metres. Dwelling U3 (2BR) has 6 rooms totalling 77 square metres. Building footprint 259 square metres; open space 342 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.81, daylight 0.59, privacy 0.88, circulation 0.49, carbon 0.83, cost 0.63.
B0019 · sketch · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a courtyard on a 21.7 by 27.8 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 77 square metres. Dwelling U1 (1BR) has 5 rooms totalling 114 square metres. Dwelling U2 (2BR) has 6 rooms totalling 114 square metres. Dwelling U3 (2BR) has 6 rooms totalling 77 square metres. Building footprint 259 square metres; open space 342 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.81, daylight 0.59, privacy 0.88, circulation 0.49, carbon 0.83, cost 0.63.

Objective vector

Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.

density
0.811
daylight
0.589
privacy
0.877
circulation
0.494
carbon
0.831
cost
0.634

Reported quantities

FAR proxy (GFA / lot)
0.86
site utilisation
0.877
gross floor area, m²
518.3
footprint, m²
259.2
carbon proxy, kgCO₂e/m² (A1–A3)
321
cost index / m² (unitless)
2.32
worst habitable room, daylight
0.204
circulation share of GFA
39%
open space, net of parking
57%
courtyard void, m²
37.5
plumbing stacks
6
footprint corners
8
preferred adjacencies met
75%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension passed
  • C06max room aspect passed
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency passed
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision passed
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U01BR77.55
U11BR113.75
U22BR113.76
U32BR77.56
All 24 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared068.017.90 × 3.80
CORE@1shared circulationshared168.017.90 × 3.80
U1@0#4bedroom primaryU1036.56.75 × 5.40
U1@0#3bathroomU1011.92.20 × 5.40
U1@0#2kitchenU1034.58.95 × 3.85
U1@0#1livingU1024.87.20 × 3.45
U1@0#0entryU106.01.75 × 3.45
U2@1#4bedroom primaryU2128.53.65 × 7.80
U2@1#0entryU2141.35.30 × 7.80
U2@1#5bedroom secondaryU2113.72.80 × 4.90
U2@1#1livingU2118.63.80 × 4.90
U2@1#2kitchenU217.42.35 × 3.15
U2@1#3bathroomU214.12.35 × 1.75
U0@0#3bathroomU0023.82.85 × 8.35
U0@0#1livingU0012.42.85 × 4.35
U0@0#4bedroom primaryU0024.93.25 × 7.65
U0@0#2kitchenU0012.33.25 × 3.80
U0@0#0entryU004.13.25 × 1.25
U3@1#0entryU3112.72.70 × 4.70
U3@1#1livingU3112.62.70 × 4.65
U3@1#2kitchenU319.02.70 × 3.35
U3@1#4bedroom primaryU3123.63.40 × 6.95
U3@1#3bathroomU3111.13.40 × 3.25
U3@1#5bedroom secondaryU318.53.40 × 2.50

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